Konica L Film Camera Restoration 

Here is a link to the official manual. This camera is exclusively controlled by the light meter, which seems to be a selenium photocell. These don't need any batteries, but tend to become less reactive with time if they've been exposed to light for lots of time. Best way to test if any analog camera works is by shooting a roll of black and white film (cheapest) and getting it developed. You can do some tests beforhand though. For this camera I'd try shining a flashlight on and off of the light meter (black grid thing next to the viewfinder) and see if it moves. I'd also check the lens for fungus/dirt. To do this you set the shutter to B (manual explains how to do so) and open the film back. Make sure your aperture is set to 2.8 so you will be able to see the entire lens. Hold down the shutter button while you look through the back of the camera towards a light source. If you see any webs, spots of dust or dirt on it, depending on how bad it is, your lens is dirty and will produce images between slightly affected and totally unusable. But again, these tests are only surface level. If you really want to know if its working properly or not, you will have to shoot a roll of 35mm film through it. manual link here. www.cameramanuals.org/konica/konica_l.pdf

35mm film